21581946 (number)

21581946 is an even 8-digits composite number following 21581945 and preceding 21581947. In scientific notation, it is written as 2.1581946 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors. There are 7193976 positive integers (up to 21581946) that are relatively prime to 21581946.

Interesting facts

Basic properties

Name

Name twenty-one million five hundred eighty-one thousand nine hundred forty-six

Notation

Scientific notation 2.1581946 × 10^7
Engineering notation 2.1581946 × 10^6

Prime Factorization of 21581946

Prime Factorization 2 × 3 × 3 × 1198997

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 7193982
Product of the distinct prime numbers

The prime factorization of 21581946 is 2 × 3 × 3 × 1198997. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 5, 68, 13, 862, 444, 1702, 6447, 3688, 49127, 645582, 705760, 8977964, 9565187, 56057422, 76690746, 237306675, 445064281, 1961632955, 2630767560

Basic calculations (n = 21581946)

Multiplication

n×y
n×2 43163892
n×3 64745838
n×4 86327784
n×5 107909730

Division

n÷y
n÷2 10790973
n÷3 7193982
n÷3 5395486.5
n÷5 4316389.2

Exponentiation

ny
n2 465780393146916
n3 1.0052447292756E+22
n4 2.169513746401E+29
n5 4.6822328521083E+36

Nth Root

y√n
2√n 4645.6373082711
3√n 278.41771649542
4√n 68.158912170538
5√n 29.296660633168

Divisors of 21581946

1, 2, 3, 6, 9, 18, 1198997, 2397994, 3596991, 7193982, 10790973, 21581946

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21581945
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21581946 can be divided by 12 positive divisors. The sum of these divisors (counting 21581946) is 1, the average is 0.083333333333333.

Base conversion 21581946

Base System Value
2 Binary 1010010010101000001111010
3 Ternary 1111121110212100
4 Quaternary 1102111001322
5 Quinary 21011110241
6 Senary 2050324230
8 Octal 122250172
10 Decimal 21581946
12 Duodecimal 7289676
16 Hexadecimal 149507a
20 Vigesimal 6eheh6
36 Base36 cukqi

Cryptographic Hash Functions

md5 2615e3c1edf9801e4b1dd00f80ce0cd2
sha1 a2351cdb16b6d401252adc49c012fe90d3433ab8
sha256 b0dc80dfbc0e5c2b02b304f7b1fcb03c82f3b87b89e5a8df531a18e5a548743b
sha512 016e6f57e29ea44ba2865d223cf324988a2c26c3d84d96428ba9cf82116e95ff115ff35790f214e055355507c1ee89a66edc3add028b179ef193bafaceb3b4e3
ripemd-160 98fbfa62794f169b68e7530b6035d1d8b0293130

21581946 as geometric shapes

Circle

Radius = n
Diameter 43163892
Circumference 135603366.00754
Area 1.4632922612965E+15

Sphere

Radius = n
Volume 4.2107592754026E+22
Surface area 5.8531690451861E+15
Circumference 135603366.00754

Square

Length = n
Perimeter 86327784
Area 465780393146916
Diagonal 30521480.735604

Cube

Length = n
Surface area 2794682358881496
Volume 1.0052447292756E+22
Space diagonal 37381026.998208

Equilateral Triangle

Length = n
Perimeter 64745838
Area 2.0168882652497E+14
Altitude 18690513.499104

Triangular Pyramid

Length = n
Surface area 2.0168882652497E+14
Volume 1.1846922747046E+21
Height 10173826.911868